Related Clues:

• Went under
• Received less than a passing grade
• Didn't make the grade
• Was unsuccessful
• Fell short
• Missed the mark
• Flopped
• Needed to retake, maybe
• Came up short
• Unsuccessful
• Went belly up
• Was unsuccessful, did not pass exam
• Did not succeed, perhaps at exam
• Did not succeed
• Didn't make it - not well